WO2016116378A1 - Metering device and method for metering tobacco - Google Patents

Abstract

The invention relates to a metering device (10), designed and configured to meter tobacco, comprising an accumulator chute (11) for holding and leading the tobacco in the direction of the metering roll (12), the metering roll (12) for removing and forwarding the tobacco from the accumulator chute (11), and a beater roll (13) for knocking the tobacco out of the metering roll (12), which is characterized in that, in the outlet area of the tobacco from the accumulator chute (11), a deflection element (15) is arranged in such a way that the deflection element (15) can be deflected by the tobacco coming out of the accumulator chute (11), wherein the deflection element (15) is connected to an open-loop and/or closed-loop control unit (16) for the metering roll (12). The invention further relates to a corresponding method.

Description

 Dosing device and method for dosing tobacco

description

The invention relates to a metering device, designed and set up for

 Dosing of tobacco, comprising a stowage shaft for receiving and guiding the tobacco in the direction of a metering roller, the metering roller for removing and

Forwarding the tobacco from the stowage and a racket roller for

Knocking out the tobacco from the metering roller.

The invention further relates to a method for dosing tobacco, comprising the steps of filling a jam with tobacco, passing the tobacco into the area of a dosing roller, removing and passing the tobacco out of the dumbbell by means of the dosing roller, and knocking the tobacco out of the dosing roller by means of a racket roller.

Such metering devices and methods are used in the tobacco processing industry. The metering devices are preferably part of a distributor device, but can also be used as an independent unit or in other machines of the tobacco-processing industry. In the

Manufacture of cigarettes is tobacco, preferably coated tobacco,

for example, within the distributor device via a vertical conveyor the

Stützeacht fed to the metering device. Behind the stowage bay, the tobacco can optionally be loosened by means of a vibrating chute. Behind the

Staftacht or the Rüttelschacht the tobacco is then virtually withdrawn and supplied for example via a rolling room a strand conveyor or the like. To remove the tobacco from the Stächacht or Rüttelschacht

usually used a pair of rollers. In the transport direction T of the tobacco, this first hits behind the stowage shaft / shaking shaft onto the metering roller, which releases the tobacco from the stowage shaft / shaker shaft and forwards it. By means of the bat roller, the tobacco is then knocked out of the metering and a Subsequent further processing supplied. Usually, a needle or spiked roller is used as a metering, by means of which the tobacco from the

Stächacht / Rüttelschacht is removed. By the needle / sting construction of the metering roll, the tobacco fibers caught in the metering and must then from the racket roller in the truest sense of the word from the metering

be beaten.

In the known metering devices and methods, the metering of the tobacco for a type of tobacco can take place on account of product loadings due to these adapted constant rotational speeds of the metering roller. This means that metering is independent of the amount of tobacco and / or the density of the tobacco within the

Stauschachts / Rüttelschachts and other parameters for a type of tobacco always takes place in the same way. The rotational speed of the metering roller is not directly adapted to the particular production conditions and the individual parameters of the tobacco of a type of tobacco, which can lead to a burden on the tobacco fibers and thus to their damage. Also, that can

Knocking out the tobacco from the metering to damage the

Lead tobacco fibers. The invention is therefore based on the object to provide a simple and the tobacco fibers gentle dosing. Furthermore, the object is to propose a corresponding method.

This object is achieved by a metering device of the type mentioned above in that in the outlet region of the tobacco from the stowage shaft, a deflecting element is arranged such that it is deflected by the coming out of the stowage tobacco, wherein the deflecting element to a control and / or

Control unit for the metering roller is connected. In other words, the deflection element generates an individual input signal depending on the magnitude of the deflection, which is forwarded to the control and / or regulating unit. Due to the fact that both the deflection element and the metering roller to the

Control and / or regulating unit are connected, a controlled and / or controlled decrease of the tobacco from the stowage by the metering roller can be ensured by the control and / or regulation of the rotational speed. In other words, the inventive design ensures a controlled and gentle product dosage of the tobacco. A particularly preferred development of the invention is characterized in that the stowage shaft is assigned a vibration device for compressing the tobacco in the stowage to a tobacco cake, and that the vibration device is controllable and / or controllable via the deflecting element by means of the control and / or regulating unit. Because the vibration device is also connected to the control and / or regulation unit, controlled and / or regulated compression of the tobacco in the stowage time can be ensured by controlling and / or regulating the frequency.

Preferably, the deflection element is arranged in the transition region between the metering roller and the racket roller. By positioning the deflection element in the transition region of the two rollers, a targeted and precise control and / or regulation can be achieved.

A preferred embodiment is characterized in that the metering roller and / or the vibration device can be controlled and / or regulated as a function of the size of the deflection of the deflection element. The fact that the size of the deflection of the deflecting element is determined by the tobacco or tobacco cake, namely in particular by its size and / or density, can be an individual and gentle on the product control and / or regulation of the

Dosage involved components are achieved.

Advantageously, the speed of the metering roller in dependence on the size of the deflection control and / or regulated. At a large deflection, synonymous with a high density of tobacco or tobacco cake, the

Rotation speed of the metering be controlled and / or regulated, preferably down regulated to ensure a gentle product removal and forwarding of the tobacco from the stowage. With a small deflection of the deflection element, the control and / or regulation can take place in the reverse manner. This control and / or regulation can be done virtually online to create consistent production conditions and individually adapted to the particular material to be processed conditions. In a further preferred embodiment, the frequency of

Vibration device depending on the size of the deflection control and / or adjustable. With a large deflection, equivalent to a high density of the tobacco cake, the frequency of the vibration can be controlled and / or regulated, preferably down-regulated, in order to keep the density of the tobacco cake at a constant value. With a small deflection of the deflection element, the control and / or regulation can take place in the reverse manner. This control and / or regulation can be done virtually online to consistent

Production conditions and to create individually adapted to the respective material to be processed conditions. Conveniently, the deflection element is a pressure plate, wherein the degree of deflection is determined by the density of the tobacco cake. For a particularly simple and reliable design of a deflection element for controlling the production conditions, namely control and / or regulation of the speed of the metering roller and the frequency of the vibration device, provided.

A particularly preferred embodiment of the invention is characterized in that the metering roller is designed as a needle-and spine-free profile roller and the racket roller as a provided with needles and / or spines Ausstreichwalze.

Because the metering roller is a profiled roller, the tobacco can first be gently removed from the stowage shaft and forwarded. Furthermore, the removed tobacco lays like a kind of fleece on the outer surface. This allows the doctor to strip the tobacco from the surface, avoiding destruction of the tobacco fibers during dosing.

Advantageously, the metering roller at its peripheral surface with a

Saw tooth profile provided whose profile is directed so that the tobacco when removing from the stowage over the oblique back of the respective

Sawtooth slides. With this embodiment, a particularly suitable profile is described, on the one hand the reliable removal of the tobacco from the

Stowage enabled and on the other hand facilitates the gentle product removal of the tobacco removed from the metering roller.

The object is also achieved by a method with the steps mentioned above, that the tobacco when leaving the stowage a

Deflection deflects, wherein the deflection of the deflection element a Input signal to a control and / or regulating unit supplies, controlled by means of the metering and / or regulated.

Advantageously, the tobacco in the stowage by means of a

Vibrating device compacted into a tobacco cake, wherein the

 Vibration device is controlled and / or regulated by the control and / or regulating unit via the deflection element.

Preferably, the speed of the metering roller and / or the frequency of

Vibration device as a function of the size of the deflection of the

 Deflection element controlled and / or regulated. Advantageously, the degree of deflection is determined by the amount of tobacco or the density of the tobacco cake. The more tobacco flows or the denser the tobacco or tobacco cake, the greater the deflection. The density of the tobacco or tobacco cake is in turn determined by the frequency of the vibrator. The greater the deflection, so with increasing density of the tobacco cake, the slower it turns

Metering. For a gentle material dosage of the tobacco is guaranteed.

A particularly preferred development is characterized in that the tobacco from the tobacco cake behind the stowage by means of a needle and spiked

Profile roll is removed, the tobacco slides over the profile of the profile roller, and then the tobacco provided by means of needles and / or spikes

Stripping roller is scraped off the lateral surface of the profile roller. With this method it is achieved that the tobacco fibers are carefully detached from the tobacco cake by gently scraping off the tobacco fleece forming on the surface of the profile roller from the coating roller.

The resulting advantages have already been described in connection with the metering device according to the invention, which is particularly suitable for carrying out the method, so reference is made to avoid repetition on the corresponding passages.

Further expedient and / or advantageous features emerge from the

Subclaims and the description. A particularly preferred embodiment of the invention will be explained in more detail with reference to the accompanying drawings. In the

Drawing shows: 1 is a schematic view of a first embodiment of the metering device according to the invention with a minimally deflected deflection element,

Fig. 2 is a schematic view of another embodiment of

 Dosing device according to the invention with a further deflected

 Deflection element, and Fig. 3, the metering device according to Figure 2 with a maximum deflected

 Articulating.

The metering device shown in the drawing is used for metering tobacco in a distributor device for the production of cigarettes.

In the figure 1, a metering device 10 is shown, which is designed and adapted for metering of tobacco and a stowage 1 1 for receiving and guiding the tobacco in the direction of a metering roller 12, the metering roller 12 for removing and forwarding the tobacco from the stowage 1 and a bat roller 13 for knocking the tobacco out of the metering roller 12. By the rotation of the metering roller 12 by means of a drive, not shown, the metering roller 12 engages the tobacco from the stowage 1 1 nachrückenden tobacco and takes the tobacco from this and passes it on to the bat drum 13, which in turn by means of a drive, not shown rotatably driven is. Characterized in that the racket roller 13 with the metering roller 12 at least during operation of the metering device 10 in

Active compound, that comes into operative engagement stands, the tobacco is released from the metering roller 12 and forwarded by the racket roller 13 to a downstream processing.

This metering device 10 is inventively characterized in that in the outlet region of the tobacco from the stowage compartment 1 1, a deflecting element 15 is arranged such that it is deflected by the coming out of the stowage compartment 1 1 tobacco, wherein the deflecting element 15 to a control and / or

Control unit 16 for the metering roller 12 is connected. The deflection element 15 thus forms together with the control and / or regulating unit 16 and the Dosing roller 12 a control and / or control loop, which is closed by wired and / or wireless connections.

The features and further developments described below represent individually or in combination preferred embodiments. It is expressly understood that features that are summarized in the claims and / or the description or in a common

Embodiment are described, even functionally independently can further develop the metering device 10 described above.

Preferably, the stowage compartment 1 1 is associated with a vibration device 14 for compressing the tobacco in the stowage 1 1 to a tobacco cake, as is apparent from Figures 2 and 3. As a result of the fact that the vibration device 14 acts on the stowage shaft 1 1 at a frequency f, the tobacco delivered to or into the stowage compartment 1 1 is compressed to a substantially homogeneous density. In the illustrated embodiment, the vibrator 14 is e.g. as a on the stowage 1 1 adjacent vibrating frame 17 is formed. Other suitable

Vibrating means 14, for example vibrating elements or the like, are however also usable as long as the frequency can be transmitted to the stowage compartment 1 1 and thus to the tobacco contained therein for its compaction. The

Vibration device 14 is also by means of the control and / or

Control unit 16 can be controlled and / or regulated. In other words, that is

Vibration device 14 incorporated in the control and / or control loop. The deflection element 15 is arranged in the transition region between the metering roller 12 and the racket roller 13. In the embodiment shown, the

The fulcrum I of the metering roller 12 is above and laterally offset from the fulcrum II of the racket roller 13. This creates a kind of Einzugskeil K between the two rollers into which the stowage compartment 1 1 opens. In the region of this pull-in wedge K protrudes the deflecting element 15, so that the leakage of tobacco or tobacco cake from the storage shaft 1 1 inevitably leads to a deflection of the deflection element 15. The metering roller 12 and / or the vibration device 14 can be controlled and / or regulated as a function of the size of the deflection of the deflection element 15. More accurate is the speed of the metering roller 12 in dependence on the size of the deflection control and / or adjustable. Accordingly, the frequency of the vibration device 14 as a function of the size of the deflection control and / or regulated. For this purpose, the metering roller 12 and the vibration device 14 as well as the deflection element 15 are connected via signal lines 18 to the control and regulation unit 16.

In the drawing, the deflection element 15 is a simple pressure plate 19. The degree of deflection of the pressure plate 19 is determined by the density of the tobacco or

Tobacco cake determined. In addition to this mechanical execution of the

Deflection element 15 may also include electronic deflection components, such as e.g.

Sensors or the like can be used as a deflecting element 15.

The metering roller 12 is preferably designed as a needle-and spine-free profile roller 20 and the racket roller 13 as a provided with needles and / or spines Ausstreichwalze 21. Particularly preferably, the metering roller 12 or profiled roller 20 is provided on its peripheral surface with a sawtooth profile 22, the profile of which is directed so that the tobacco slides on removal from the stowage over the oblique ridge of the respective sawtooth. Instead of the sawtooth profile 22, the profile roller 20 may also have a wavy, riffelige or otherwise the removal of the tobacco from the tobacco cake and forwarding of the tobacco-enabling structure.

The method according to the invention is explained in more detail below with reference to the drawing:

The method is used for dosing tobacco. For this purpose, the storage shaft 1 1 of the metering device 10 is filled with tobacco. The sighted or uncoated tobacco fibers preferably fall from above into the stowage compartment 11. The filling of the storage shaft 1 1 can be actively supported for example by an input side on the storage shaft 1 1 arranged rotary valve or the like. The tobacco is passed within the storage shaft 1 1 in the region of the metering roller 12 and then removed by means of the metering roller 12 from the storage shaft 1 1 and forwarded. The dissolved from the metering roller 12 from the stowage and forwarded by the rotation of the metering roller 12 tobacco is then knocked out by the also rotating racket roller 13 from the metering roller 12, namely removed. According to the invention, the tobacco deflects on exiting the stowage compartment 1 1 a deflecting element 15, wherein the deflection of the deflecting element 15 a Input signal to a control and / or regulating unit 16 supplies, by means of which the metering roller 12 is controlled and / or regulated. In other words, the deflecting element 15 detects the change in the tobacco, namely in particular the amount and / or density of the tobacco based on the size of the deflection, and passes this information to the control and / or regulating unit 16 on. The control and / or regulating unit 16 can process this information and intervene appropriately in the process. The speed of the metering roller 12 is controlled in dependence on the size of the deflection of the deflection element 15 and / or regulated. As mentioned, the degree of deflection is determined by the amount of tobacco and / or density of the tobacco. A highly compressed tobacco or a large

 Tobacco quantity deflects stronger than a low-density tobacco or a small amount of tobacco.

Preferably, in the stowage compartment 1 1, the tobacco is compacted into a tobacco cake by subjecting the stowage compartment 1 1 to a frequency by means of a vibration device 14. By vibrating, the tobacco fibers condense to the tobacco cake. The deflection of the deflection element 15 provides the

Input signal to the control and / or regulating unit 16, by means of which then not only the metering roller 12 but also the vibration device 14, namely the frequency of the vibration device 14 is controlled and / or regulated.

The tobacco is removed from the tobacco cake behind the stowage 1 1 by means of a needle and spiked profile roller 20. The rotation of the profile roller 20, the tobacco fibers are released again from the tobacco cake. In this case, the tobacco slides over the profile of the profile roller 20. In the event that a sawtooth profile 22 is formed on the lateral surface of the profile roller 20, the removed tobacco slides over the oblique ridge of each sawtooth. By the rotation of the profile roller 20 of the tobacco enters the sphere of action provided with needles and / or spines Ausstreichwalze 21, which then gently the tobacco from the lateral surface of the

Profile roll 20 strokes.

Claims

Expectations 1 . Dosing device (10), designed and set up for dosing tobacco, comprising a storage shaft (1 1) for receiving and guiding the tobacco in the direction of a metering roller (12), the metering roller (12) for removing and forwarding the tobacco from the storage shaft (1 1 ) and a beater roller (13) for knocking out the tobacco from the metering roller (12), which means that there is a mark in the exit area of the tobacco from the A deflection element (15) is arranged in the storage shaft (1 1) in such a way that it can be deflected by the tobacco coming from the storage shaft (1 1), the deflection element (15) being connected to a control and/or Control unit (16) for the metering roller (12) is connected. 2. Dosing device (10) according to claim 1, characterized in that the storage shaft (1 1) is assigned a vibration device (14) for compressing the tobacco in the storage shaft (1 1) into a tobacco cake, and that the Vibration device (14) via the deflection element (15) by means of the Control and/or regulation unit (16) can be controlled and/or regulated. 3. Dosing device (10) according to claim 1 or 2, characterized in that the deflection element (15) in the transition area between the Metering roller (12) and the beater roller (13) are arranged. 4. Metering device (10) according to one or more of claims 1 to 3, characterized in that the metering roller (12) and / or the Vibration device (14) depending on the size of the deflection of the Deflection element (15) can be controlled and/or regulated. 5. Metering device (10) according to one or more of claims 1 to 4, characterized in that the speed of the metering roller (12) is in Depending on the size of the deflection of the deflection element (15) can be controlled and / or regulated. 6. Dosing device (10) according to one or more of claims 2 to 5, characterized in that the frequency of the vibration device (14) can be controlled and / or regulated depending on the size of the deflection of the deflection element (15). Dosing device (10) according to one or more of claims 1 to 6, characterized in that the deflection element (15) is a pressure plate (19), the extent of the deflection being determined by the density of the tobacco cake. Metering device (10) according to one or more of claims 1 to 7, characterized in that the metering roller (12) is a needle- and spike-free profile roller (20) and the beater roller (13) is a spreading roller (21) provided with needles and/or spikes ) is trained. Dosing device (10) according to one or more of claims 1 to 8, characterized in that the metering roller (12) is provided on its peripheral surface with a sawtooth profile (22), the profile of which is directed in such a way that the tobacco when removed from the tobacco cake over the oblique Back of each sawtooth slides. Method for dosing tobacco, comprising the steps: Filling a storage shaft (1 1) with tobacco, Directing the tobacco into the area of a metering roller (12), - Removing and forwarding the tobacco from the storage shaft (1 1) using the metering roller (12), and - Knocking out the tobacco from the metering roller (12) using a beater roller (13), This means that the tobacco deflects a deflection element (15) when it emerges from the storage shaft (1 1), the deflection of the deflection element (15) providing an input signal to a control and / or regulation unit (16), by means of which the metering roller (12) can be controlled and/or regulated. Method according to claim 10, characterized in that the tobacco in the storage shaft (1 1) is compressed into a tobacco cake by means of a vibration device (14), the vibration device (14) being controlled and/or regulated via the deflection element (15) by the control and/or regulation unit (16). 12. The method according to claim 10 or 1 1, characterized in that the speed of the metering roller (12) and / or the frequency of Vibration device (14) can be controlled and / or regulated depending on the size of the deflection of the deflection element (15). 13. The method according to one or more of claims 10 to 12, characterized characterized that the amount of deflection is determined by the density of the Tobacco cake is determined. 14. The method according to one or more of claims 10 to 13, characterized characterized in that the tobacco is removed from the tobacco cake behind the storage shaft (1 1) by means of a needle- and spike-free profile roller (20), whereby the tobacco slides over the profile of the profile roller (20), and the tobacco is then removed by means of a needle- and/or spike-free profile roller (20). or spiked spreading roller (21) is scraped from the lateral surface of the profile roller (20).